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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2001) Threshold for RM to accept requests from AM after failover
Date Tue, 06 May 2014 03:55:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-2001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13990254#comment-13990254
] 

Jian He commented on YARN-2001:
-------------------------------

bq. Then node1 comes back to RM, RM recovers all containers on node1.
On a second thought, this can be changed to not recover those containers and choose to kill
them to meet the resource limit. That's another decision to make.

> Threshold for RM to accept requests from AM after failover
> ----------------------------------------------------------
>
>                 Key: YARN-2001
>                 URL: https://issues.apache.org/jira/browse/YARN-2001
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Jian He
>            Assignee: Jian He
>
> RM should not accept allocate requests from AMs until all the NMs have registered with
RM. For that, RM needs to remember the previous NMs and wait for all the NMs to register.
> This is also useful for remembering decommissioned nodes across restarts.



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